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(en) Keiichi Honda, Yasuyuki Honda, Satoshi Yamamoto et Hisashi Ômura, « Differential utilization of pyrrolizidine alkaloids by males of a danaid butterfly, Parantica sita, for the production of danaidone in the alar scent organ », Journal of Chemical Ecology, vol. 31, no 4, , p. 959-964 (DOI10.1007/s10886-004-1791-x, lire en ligne, consulté le ).
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(en) Tiziana Nardin, Edi Piasentier, Chiara Barnaba et Roberto Larcher, « Alkaloid profiling of herbal drugs using high resolution mass spectrometry », Drug Testing and Analysis, , n/a–n/a (ISSN1942-7611, DOI10.1002/dta.2252, lire en ligne, consulté le )-